Mass Effect 2

Glitches

Unlimited Squad Points

You must have "Dominate" as a bonus power then, Go to the research terminal and choose "Retrain Powers" to reset your squad points, then choose "Advanced Combat Research" and select "Dominate." You will now have 1 free point invested in "Dominate."
Now "Retrain Powers " again, and repeat. Each time you will get 1 extra squad point to invest. Costs 7500 element zero per use.

Contributed By: xvynx.

Unlockables

Bonus Powers for Shepard

Upon completing a character's Loyalty Mission, that character will gain their loyalty power for use. In addition, if Shepard researches Advanced Training at the research terminal in Mordin's lab, he or she can learn a single loyalty power as their "bonus power"; any subsequent times Shepard undergoes Advanced Training the new power selected will replace the old one and the skill points allotted to the old power will transfer to the new bonus power. Any bonus powers earned in previous playthroughs will be available at the start of any new game at character creation and at a research terminal.

Unlockable

How to Unlock

Complete Archangel's Loyalty Mission

Armor Piercing Ammo

Complete Jacob's Loyalty Mission

Barrier

Side with Morinth in Samara's Loyalty Mission

Dominate

Complete Kasumi's Loyalty Mission

Flashbang Grenade

Complete Grunt's Loyalty Mission

Fortification

Complete Legion's Loyalty Mission

Geth Shield Boost

Complete Zaeed's Loyalty Mission.

Inferno Grenade

Complete Mordin's Loyalty Mission.

Neural Shock

Side with Samara in Samara's Loyalty Mission.

Reave

Complete Tali's Loyalty Mission.

Shield Drain

Complete Thane's Loyalty Mission.

Shredder Ammo

Complete Miranda's Loyalty Mission.

Slam

Complete the Lair of the Shadow Broker DLC.

Stasis

Complete Jack's Loyalty Mission.

Warp Ammo

Contributed By: Alpha218.

Completion Bonuses

Once you beat the game, you will unlock these bonuses. It doesn't matter if you start a fresh file or a New Game + file, either way these bonuses will kick in if you have a completed file on your system.

Unlockable

How to Unlock

Start a new game after beating the game once.

25% Experience Boost

Start a new game after beating the game once.

Start with 200,000 Credits

Start a new game after beating the game once.

Start with 50,000 of Each Resource

Contributed By: Alpha218.

New Game+

To unlock New Game+, clear the Suicide Mission/watch the credits, then start a new game and select the "Import ME2 Character" option, and select the save file you cleared the Suicide mission on. In New Game+ your current Level, Class, Skills, Weapons Training, and Equipment from your previous save file will be carried over to the new file. in addition, you also gain 50,000 of each resource and a 200,000 Credit Bonus. (NOTE: Upgrades do not carry over and your Karma/Squad Loyalty is reset in New Game+)